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26 <div class=
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27 <a name=
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"Integer and Fractional Part Splitting (modf)">Integer and Fractional Part
29 </h3></div></div></div>
30 <pre class=
"programlisting"><span class=
"preprocessor">#include
</span> <span class=
"special"><</span><span class=
"identifier">boost
</span><span class=
"special">/
</span><span class=
"identifier">math
</span><span class=
"special">/
</span><span class=
"identifier">special_functions
</span><span class=
"special">/
</span><span class=
"identifier">modf
</span><span class=
"special">.
</span><span class=
"identifier">hpp
</span><span class=
"special">></span></pre>
31 <pre class=
"programlisting"><span class=
"keyword">template
</span> <span class=
"special"><</span><span class=
"keyword">class
</span> <span class=
"identifier">T
</span><span class=
"special">></span>
32 <span class=
"identifier">T
</span> <span class=
"identifier">modf
</span><span class=
"special">(
</span><span class=
"keyword">const
</span> <span class=
"identifier">T
</span><span class=
"special">&</span> <span class=
"identifier">v
</span><span class=
"special">,
</span> <span class=
"identifier">T
</span><span class=
"special">*
</span> <span class=
"identifier">ipart
</span><span class=
"special">);
</span>
34 <span class=
"keyword">template
</span> <span class=
"special"><</span><span class=
"keyword">class
</span> <span class=
"identifier">T
</span><span class=
"special">,
</span> <span class=
"keyword">class
</span> <span class=
"identifier">Policy
</span><span class=
"special">></span>
35 <span class=
"identifier">T
</span> <span class=
"identifier">modf
</span><span class=
"special">(
</span><span class=
"keyword">const
</span> <span class=
"identifier">T
</span><span class=
"special">&</span> <span class=
"identifier">v
</span><span class=
"special">,
</span> <span class=
"identifier">T
</span><span class=
"special">*
</span> <span class=
"identifier">ipart
</span><span class=
"special">,
</span> <span class=
"keyword">const
</span> <span class=
"identifier">Policy
</span><span class=
"special">&);
</span>
37 <span class=
"keyword">template
</span> <span class=
"special"><</span><span class=
"keyword">class
</span> <span class=
"identifier">T
</span><span class=
"special">></span>
38 <span class=
"identifier">T
</span> <span class=
"identifier">modf
</span><span class=
"special">(
</span><span class=
"keyword">const
</span> <span class=
"identifier">T
</span><span class=
"special">&</span> <span class=
"identifier">v
</span><span class=
"special">,
</span> <span class=
"keyword">int
</span><span class=
"special">*
</span> <span class=
"identifier">ipart
</span><span class=
"special">);
</span>
40 <span class=
"keyword">template
</span> <span class=
"special"><</span><span class=
"keyword">class
</span> <span class=
"identifier">T
</span><span class=
"special">,
</span> <span class=
"keyword">class
</span> <span class=
"identifier">Policy
</span><span class=
"special">></span>
41 <span class=
"identifier">T
</span> <span class=
"identifier">modf
</span><span class=
"special">(
</span><span class=
"keyword">const
</span> <span class=
"identifier">T
</span><span class=
"special">&</span> <span class=
"identifier">v
</span><span class=
"special">,
</span> <span class=
"keyword">int
</span><span class=
"special">*
</span> <span class=
"identifier">ipart
</span><span class=
"special">,
</span> <span class=
"keyword">const
</span> <span class=
"identifier">Policy
</span><span class=
"special">&);
</span>
43 <span class=
"keyword">template
</span> <span class=
"special"><</span><span class=
"keyword">class
</span> <span class=
"identifier">T
</span><span class=
"special">></span>
44 <span class=
"identifier">T
</span> <span class=
"identifier">modf
</span><span class=
"special">(
</span><span class=
"keyword">const
</span> <span class=
"identifier">T
</span><span class=
"special">&</span> <span class=
"identifier">v
</span><span class=
"special">,
</span> <span class=
"keyword">long
</span><span class=
"special">*
</span> <span class=
"identifier">ipart
</span><span class=
"special">);
</span>
46 <span class=
"keyword">template
</span> <span class=
"special"><</span><span class=
"keyword">class
</span> <span class=
"identifier">T
</span><span class=
"special">,
</span> <span class=
"keyword">class
</span> <span class=
"identifier">Policy
</span><span class=
"special">></span>
47 <span class=
"identifier">T
</span> <span class=
"identifier">modf
</span><span class=
"special">(
</span><span class=
"keyword">const
</span> <span class=
"identifier">T
</span><span class=
"special">&</span> <span class=
"identifier">v
</span><span class=
"special">,
</span> <span class=
"keyword">long
</span><span class=
"special">*
</span> <span class=
"identifier">ipart
</span><span class=
"special">,
</span> <span class=
"keyword">const
</span> <span class=
"identifier">Policy
</span><span class=
"special">&);
</span>
49 <span class=
"keyword">template
</span> <span class=
"special"><</span><span class=
"keyword">class
</span> <span class=
"identifier">T
</span><span class=
"special">></span>
50 <span class=
"identifier">T
</span> <span class=
"identifier">modf
</span><span class=
"special">(
</span><span class=
"keyword">const
</span> <span class=
"identifier">T
</span><span class=
"special">&</span> <span class=
"identifier">v
</span><span class=
"special">,
</span> <span class=
"keyword">long
</span> <span class=
"keyword">long
</span><span class=
"special">*
</span> <span class=
"identifier">ipart
</span><span class=
"special">);
</span>
52 <span class=
"keyword">template
</span> <span class=
"special"><</span><span class=
"keyword">class
</span> <span class=
"identifier">T
</span><span class=
"special">,
</span> <span class=
"keyword">class
</span> <span class=
"identifier">Policy
</span><span class=
"special">></span>
53 <span class=
"identifier">T
</span> <span class=
"identifier">modf
</span><span class=
"special">(
</span><span class=
"keyword">const
</span> <span class=
"identifier">T
</span><span class=
"special">&</span> <span class=
"identifier">v
</span><span class=
"special">,
</span> <span class=
"keyword">long
</span> <span class=
"keyword">long
</span><span class=
"special">*
</span> <span class=
"identifier">ipart
</span><span class=
"special">,
</span> <span class=
"keyword">const
</span> <span class=
"identifier">Policy
</span><span class=
"special">&);
</span>
56 The
<code class=
"computeroutput"><span class=
"identifier">modf
</span></code> functions store
57 the integer part of
<span class=
"emphasis"><em>v
</em></span> in
<code class=
"computeroutput"><span class=
"special">*
</span><span class=
"identifier">ipart
</span></code> and return the fractional part of
58 <span class=
"emphasis"><em>v
</em></span>. The sign of the integer and fractional parts are
59 the same as the sign of
<span class=
"emphasis"><em>v
</em></span>.
62 If the argument
<span class=
"emphasis"><em>v
</em></span> is either non-finite or else outside
63 the range of the result type, then returns the result of
<a class=
"link" href=
"../error_handling.html#math_toolkit.error_handling.rounding_error">rounding_error
</a>:
64 by default this throws an instance of
<code class=
"computeroutput"><span class=
"identifier">boost
</span><span class=
"special">::
</span><span class=
"identifier">math
</span><span class=
"special">::
</span><span class=
"identifier">rounding_error
</span></code>.
67 <table xmlns:
rev=
"http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width=
"100%"><tr>
68 <td align=
"left"></td>
69 <td align=
"right"><div class=
"copyright-footer">Copyright
© 2006-
2010,
2012-
2014 Nikhar Agrawal,
70 Anton Bikineev, Paul A. Bristow, Marco Guazzone, Christopher Kormanyos, Hubert
71 Holin, Bruno Lalande, John Maddock, Jeremy Murphy, Johan R
åde, Gautam Sewani,
72 Benjamin Sobotta, Thijs van den Berg, Daryle Walker and Xiaogang Zhang
<p>
73 Distributed under the Boost Software License, Version
1.0. (See accompanying
74 file LICENSE_1_0.txt or copy at
<a href=
"http://www.boost.org/LICENSE_1_0.txt" target=
"_top">http://www.boost.org/LICENSE_1_0.txt
</a>)
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